Fire and water proof composition and process of preparing the same.



16 -vide a composition I so mvmEnsT Tiss OFFICE.

JOHN A. scnaitwa'rn; or BROOKLYN, NE'W'YOBK.

FIRE AND WATER PROOF COMPOSITION AND PROCESS OF PREPARING SAME.

NoDrawing.

-New York, have invented certain new and useful Improvements in Fire andWater Proof Compositions and Processes of Preparing the Same, of whichthe following is a specification.

My invention relates to fire-proofing materials and compositions.

[One of its objects is to provide means for treating an improvedmaterial of this character that shall be both fire and water-proof.

Another object of m invention is to promatter with which paper, textilefabrics, wood, cardboard and the like may be treated and rendered fire.-proof and impervious to moisture.

Other objects and advantages of my invention will be set forthhereinafter.

I shall now describe my invention in detail and shall then point out thefeatures of novelty inappended claims. I

In the treatment of materials such as those enumerated above, I firstprepare a bath composed of a solution of liquid silicate of soda withwhich is mixed fire clay and oxid of manganese. There is also preferablyincluded relatively small quantities of red oxid of manganese and oxidof magnesia. The following proportions have been undto' be desirable:

Substance. Parts weight.

Water 300 Silicate of soda-" 150 (liquid).

Fire-clay -125 Oxid of manganese Red oxid of manganese Oxid of magnesia-50 (powder).

10 (powder 10 (powder to 500 degrees F. which causes the materials toflux and unite chemically or are thor- Sneciflcatlon of Letters Patent.

' Patented Apr. 20, 1915.

Application filed April 10, 1913. Serial No. 760,229.

oughly dried at atemperature of about 130 degrees F. The treatedarticles are preferably dipped a second time in the bath and baked ordried as before. Finally the articles thus treated are dipped in asolution of oxid of magnesia and chlorid of magnesia. After this dippingthe articles are dried at a temperature sufiicient to remove allsuperfluous moisture. This treatment permeates and coats the articleswith a stone-like substance which renders them fire-proof and also formsan outside coating which resem--- bles stone which renders them not onlyimpervious to moisture but is also umnfluenced by sulfur or ammoniafumes or gases and is not attacked by hydrofluoric acid. The

final treatment is byno means independent of the previous treatment andin fact I be lieve it is valueless if used alone.

The essential ingredients of the first coating are silicate of soda andwater and one or more of the other ingredients may "be process. Thecomposite coating of my invention is also particularly desirable becauseit is unaffected by hot Water.

While my improved'composition is particularly well adapted for use inpreparing linings for smokestacks, breechings and the like and forcovering pipes and joints which are exposed to heat and to the weather,it

may be utilized for various other purposes within the spirit and scopeof my invention.

What I' claim is: 1. The process of rendering an article fireproof andWater-proof that consists in treat 195 ing the article with a solutioncomposed of silicate of soda, fire clay and oxid of manganese, bakingthe articleand finally treating the article in a second solution adaptedto combine with the first solution to produce a 110 surface coating ofhard stone-like fire-proof material that is impervious to moisture.

' 2. The process of rendering an article fires proof and water-proofthat consists in treating the article with a solution composed ofsilicate of soda, fire clay and oxid of-manganese', baking the articleand finally treating the article in a solution composed of oxid ofmagnesia and chlo'rid of magnesia.

3. The process of rendering an article fire-proof and water-proof thatconsists in dipping .the article'i'n a bath composed of a solution ofsilicate of soda, fire clay and oxid of-manganese, baking the article tounite the ingredients and finally dipping the treated article in asolution composedof oxid of magnesia and chlorid of magnesia.

4. I he process of rendering an article fireproof and waterproof thatconsists in dipping the article in a bath composed of silis oda, fireclayand oxid of manganese 2o ground in water, baklng the article at atem- 6. A fire and water-proof article com-- posed of an absorbentmaterial filled and covered with a'fluxed and hardened compoundconsisting of silicate of soda, fire clay, oxid of manganese, red oxldof manganese and oxid of magnesia and having a coating consisting .ofthe aforesaid filling and covermg compound in combination with acompound consisting of oxid of chlorid of magnesia.

.7; A fire and water-proof posed; of an absorbent material filled andcovered with a fluxed and hardened com-- article com-V magnesia andpound consisting of relatively large proportions of silicate .of sodaand fireclay, relatively small proportions of red oxid of manganese andoxid of magnesia and a medium proportion of oxid of manganese and havinga coating consisting of the aforesaid filling and covering compound incombination with a compound consisting of oxid ofmagnesia and chlorid ofmagnesia.

8. A fire and Water-proof article composed of an absorbent materialfilled and' coveredf'with a fluxed and hardened com pound conslsting ofparts by weight substantially'as follows :.of silicate of soda 150,

fire clay 125, oxid of manganese 50, red oiid of manganese 10 and oxidof'magnesia 10,

and having a coating consisting of the aforesaid filling and coveringcompound in combination with a compound consisting of oxid of magnesiaand chlorid of magnesia.

9. A fire and water-proof article composed of an absorbent materialfilled and covered-with dried and hardened silicate of soda and havingan outer coating composed of oxid of magnesiaand chlorid of magnesla.

In witness whereof I have hereunto set my hand this 8th day of April,1913.

JOHN A. SCHARWATH.

Witnesses:

K. SGHARWATH, E. T. .CoNNELL.

